Finding the Fourth Proportional to 1,099.69, 1,517.57 and 633.94

Step by Step Solution

1. Step 1: Write the proportion equation
   1,099.69 : 1,517.57 = 633.94 : x
2. Step 2: Convert to fraction form
   1,099.69/1,517.57 = 633.94/x
3. Step 3: Cross multiply
   1,099.69x = 1,517.57 × 633.94
4. Step 4: Simplify right side
   1,099.69x = 962,046.12
5. Step 5: Solve for x
   x = 962,046.12/1,099.69
6. Step 6: Final answer
   x = 874.84